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<div class="title">nrf51/Board/nrf6310/flashwrite_example/main.c</div>  </div>
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<a href="nrf6310_2flashwrite__example_2main_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * The information contained herein is confidential property of Nordic</span>
<a name="l00004"></a>00004 <span class="comment"> * Semiconductor ASA.Terms and conditions of usage are described in detail</span>
<a name="l00005"></a>00005 <span class="comment"> * in NORDIC SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensees are granted free, non-transferable use of the information. NO</span>
<a name="l00008"></a>00008 <span class="comment"> * WARRANTY of ANY KIND is provided. This heading must NOT be removed from</span>
<a name="l00009"></a>00009 <span class="comment"> * the file.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> */</span>
<a name="l00012"></a>00012 
<a name="l00028"></a>00028 <span class="preprocessor">#include &lt;stdbool.h&gt;</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &quot;nrf.h&quot;</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include &quot;nrf_gpio.h&quot;</span>
<a name="l00031"></a>00031 
<a name="l00035"></a><a class="code" href="group__flashwrite__example.html#ga17fb021b480a1f220d2579807fa2e398">00035</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="group__flashwrite__example.html#ga17fb021b480a1f220d2579807fa2e398">init</a>(<span class="keywordtype">void</span>)
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037   <span class="comment">// Port0 (0-7 as inputs)</span>
<a name="l00038"></a>00038   <a class="code" href="group__nrf__gpio.html#ga6d5c4a1b82ed45f7972aea6572e085f5" title="Configure GPIO pin range as inputs with given initial value set, hiding inner details. This function can be used to configure pin range as simple input.">nrf_gpio_range_cfg_input</a>(0, 7, <a class="code" href="group__nrf__gpio.html#gga07e0c8c0b30499cf0a7b79dbe62d3fcca13ffcb94eb78be866c66b5f5b516af65" title="Pin pullup resistor disabled.">NRF_GPIO_PIN_NOPULL</a>);
<a name="l00039"></a>00039 
<a name="l00040"></a>00040   <span class="comment">// Port1 (8-15 as outputs)</span>
<a name="l00041"></a>00041   <a class="code" href="group__nrf__gpio.html#ga08c820bf0360c7406b64ddaf3bfc7222" title="Configure GPIO pin range as outputs with normal drive strength. This function can be used to configur...">nrf_gpio_range_cfg_output</a>(8, 15);
<a name="l00042"></a>00042   
<a name="l00043"></a>00043  <span class="comment">// Turn on NVMC and wait until it is powered up:</span>
<a name="l00044"></a>00044   NRF_POWER-&gt;PERPOWER |= (POWER_PERPOWER_NVMC_Power &lt;&lt; POWER_PERPOWER_NVMC_Pos);
<a name="l00045"></a>00045   <span class="keywordflow">while</span> ((NRF_POWER-&gt;PERRDY &amp; POWER_PERRDY_NVMC_Msk) != (POWER_PERRDY_NVMC_Ready &lt;&lt; POWER_PERRDY_NVMC_Pos))
<a name="l00046"></a>00046   {
<a name="l00047"></a>00047   }  
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049 
<a name="l00054"></a><a class="code" href="group__flashwrite__example.html#gaf84ec42cfbde8467d05a9400ea80dbe9">00054</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="group__flashwrite__example.html#gaf84ec42cfbde8467d05a9400ea80dbe9">flash_page_erase</a>(uint32_t *page_address)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056   <span class="comment">// Turn on flash erase enable and wait until the NVMC is ready:</span>
<a name="l00057"></a>00057   NRF_NVMC-&gt;CONFIG = (NVMC_CONFIG_WEN_Een &lt;&lt; NVMC_CONFIG_WEN_Pos);
<a name="l00058"></a>00058   <span class="keywordflow">while</span> (NRF_NVMC-&gt;READY == NVMC_READY_READY_Busy)
<a name="l00059"></a>00059   {
<a name="l00060"></a>00060   }
<a name="l00061"></a>00061   <span class="comment">// Erase page:</span>
<a name="l00062"></a>00062   NRF_NVMC-&gt;ERASEPAGE = (uint32_t)page_address;
<a name="l00063"></a>00063   <span class="keywordflow">while</span> (NRF_NVMC-&gt;READY == NVMC_READY_READY_Busy)
<a name="l00064"></a>00064   {
<a name="l00065"></a>00065   }
<a name="l00066"></a>00066   <span class="comment">// Turn off flash erase enable and wait until the NVMC is ready:</span>
<a name="l00067"></a>00067   NRF_NVMC-&gt;CONFIG &amp;= ~(NVMC_CONFIG_WEN_Een &lt;&lt; NVMC_CONFIG_WEN_Pos);
<a name="l00068"></a>00068   <span class="keywordflow">while</span> (NRF_NVMC-&gt;READY == NVMC_READY_READY_Busy)
<a name="l00069"></a>00069   {
<a name="l00070"></a>00070   }
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 
<a name="l00078"></a><a class="code" href="group__flashwrite__example.html#gac0f849d35d83c71a90b100aefcda5dc6">00078</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="group__flashwrite__example.html#gac0f849d35d83c71a90b100aefcda5dc6">flash_word_write</a>(uint32_t *address, uint32_t value)
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080   <span class="comment">// Turn on flash write enable and wait until the NVMC is ready:</span>
<a name="l00081"></a>00081   NRF_NVMC-&gt;CONFIG = (NVMC_CONFIG_WEN_Wen &lt;&lt; NVMC_CONFIG_WEN_Pos);
<a name="l00082"></a>00082   <span class="keywordflow">while</span> (NRF_NVMC-&gt;READY == NVMC_READY_READY_Busy)
<a name="l00083"></a>00083   {
<a name="l00084"></a>00084   }
<a name="l00085"></a>00085   *address = value;
<a name="l00086"></a>00086   <span class="comment">// Turn off flash write enable and wait until the NVMC is ready:</span>
<a name="l00087"></a>00087   NRF_NVMC-&gt;CONFIG = (NVMC_CONFIG_WEN_Ren &lt;&lt; NVMC_CONFIG_WEN_Pos);
<a name="l00088"></a>00088   <span class="keywordflow">while</span> (NRF_NVMC-&gt;READY == NVMC_READY_READY_Busy)
<a name="l00089"></a>00089   {
<a name="l00090"></a>00090   }
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 
<a name="l00097"></a><a class="code" href="group__flashwrite__example.html#ga840291bc02cba5474a4cb46a9b9566fe">00097</a> <span class="keywordtype">int</span> <a class="code" href="group__gpio__example.html#ga840291bc02cba5474a4cb46a9b9566fe">main</a>(<span class="keywordtype">void</span>)
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099   uint32_t *addr;
<a name="l00100"></a>00100   uint8_t patwr;
<a name="l00101"></a>00101   uint8_t patrd;
<a name="l00102"></a>00102   uint8_t patold;
<a name="l00103"></a>00103   uint32_t i;
<a name="l00104"></a>00104   uint32_t pg_size;
<a name="l00105"></a>00105   uint32_t pg_num;
<a name="l00106"></a>00106 
<a name="l00107"></a>00107   <a class="code" href="group__flashwrite__example.html#ga17fb021b480a1f220d2579807fa2e398">init</a>();
<a name="l00108"></a>00108   patold = 0;
<a name="l00109"></a>00109 
<a name="l00110"></a>00110   pg_size = NRF_FICR-&gt;CODEPAGESIZE;
<a name="l00111"></a>00111   pg_num = NRF_FICR-&gt;CODESIZE - 1;    <span class="comment">// Use last page in flash</span>
<a name="l00112"></a>00112 
<a name="l00113"></a>00113   <span class="keywordflow">while</span> (<span class="keyword">true</span>)
<a name="l00114"></a>00114   {
<a name="l00115"></a>00115     <span class="comment">// Start address:</span>
<a name="l00116"></a>00116     addr = (uint32_t *)(pg_size * pg_num);
<a name="l00117"></a>00117     <span class="comment">// Erase page:</span>
<a name="l00118"></a>00118     <a class="code" href="group__flashwrite__example.html#gaf84ec42cfbde8467d05a9400ea80dbe9">flash_page_erase</a>(addr);
<a name="l00119"></a>00119     i = 0;
<a name="l00120"></a>00120     <span class="keywordflow">do</span>
<a name="l00121"></a>00121     {
<a name="l00122"></a>00122       <span class="comment">// Read pattern from port 0 (pins0-7), and write it to flash:</span>
<a name="l00123"></a>00123       patwr =  <a class="code" href="group__nrf__gpio.html#ga40bee84dc81b9f8981eb2647dac9d267" title="Read GPIO port.">nrf_gpio_port_read</a>(<a class="code" href="group__nrf__gpio.html#ggaa1a5c145e334817f2d960317d64fcb3dada4c86d9760e81857ec0482c1cc78190" title="Port 0 (GPIO pin 0-7)">NRF_GPIO_PORT_SELECT_PORT0</a>);
<a name="l00124"></a>00124       <span class="keywordflow">if</span> (patold != patwr)
<a name="l00125"></a>00125       {
<a name="l00126"></a>00126         patold = patwr;
<a name="l00127"></a>00127         <a class="code" href="group__flashwrite__example.html#gac0f849d35d83c71a90b100aefcda5dc6">flash_word_write</a>(++addr, (uint32_t)patwr);
<a name="l00128"></a>00128         i++;
<a name="l00129"></a>00129       }
<a name="l00130"></a>00130       <span class="comment">// Read pattern from flash and write it to port 1 (pins8-15):</span>
<a name="l00131"></a>00131       patrd = (uint8_t)*addr;
<a name="l00132"></a>00132       <a class="code" href="group__nrf__gpio.html#gac1d4940bc5ad4aad4f6363c7021b08ae" title="Write GPIO port.">nrf_gpio_port_write</a>(<a class="code" href="group__nrf__gpio.html#ggaa1a5c145e334817f2d960317d64fcb3da9209d7820d65eb58c7804e676581bf40" title="Port 1 (GPIO pin 8-15)">NRF_GPIO_PORT_SELECT_PORT1</a>, patrd);
<a name="l00133"></a>00133       } <span class="keywordflow">while</span> (i &lt; pg_size);
<a name="l00134"></a>00134   }
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 
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